Just add a 200GB external hard drive to the laptop. It worked fine for half day. Then stop working: it keep loop back to the logon box after I enter the userid and password. Also it has error: "Your system has no paging file, or the paging file is too small."

To resolve this issue, give the System and Administrators accounts full control of the NTFS volume on which the paging file is configured. To do this: If you are running Windows XP Home Edition, or you are running Windows XP Professional but you do not log on to a domain, start your computer in Safe mode.For additional information about starting your computer in Safe mode, click the article number below to view the article in the Microsoft Knowledge Base: 315222 A Description of the Safe Boot Mode Options in Windows XP NOTE: If your computer seems to stop responding while Windows is loading your personal settings, press ALT+TAB to switch to the Limited Virtual Memory dialog box, and then click OK. Click Start, point to Programs (or All Programs), point to Accessories, and then click Windows Explorer. In the left pane, expand My Computer, and then click a drive that is configured to use a paging file. To determine if a drive is configured to use a paging file: Click Start, click Run, type control sysdm.cpl, and then click OK. On the Advanced tab, click Settings under Performance. On the Advanced tab, click Change under Virtual Memory. Click a drive in the list, and then note the options that are selected under Paging file size for selected drive. A drive is configured to use a paging file unless No paging file is selected for that drive. If more than one drive is configured to use a paging file, click the first drive in the list the first time that you follow these steps. Click the second drive in the list the second time that you follow these steps, and so on. Click Cancel, and then click Cancel to return to the System Properties dialog box. On the Computer Name tab, note the name before the first period in the Full computer name box. This is your computer name. You will need this information in steps 5 and 6. On the File menu, click Properties. Click the Security tab to view the current permissions. Click Add, type computer name\system, and then click OK. Click Add, type computer name\Administrators, click OK, and then click OK. Note that you must type Administrators, not Administrator. Click System, and then click to select the Full Control check box. This automatically selects the other check boxes. Click Administrators, and then click to select the Full Control check box. This automatically selects the other check boxes. Click OK. If you want to make changes to your paging file options, click Start, click Run, type control sysdm.cpl, and then click OK. On the Advanced tab, click Settings under Performance. On the Advanced tab, click Change under Virtual Memory, and then set the paging file options that you want.For additional information about configuring paging file options, click the article number below to view the article in the Microsoft Knowledge Base: 308417 HOW TO: Set Performance Options in Windows XP Close the System Properties dialog box, quit any running programs, and then restart the computer.

I have the same problem - tried the solution listed above (and went through every google hit I got for "Your System Has No Paging File, or the Paging File Is Too Small" - STILL NO LUCK. PLEASE HELP!

Here's your answer boys... http://www.jsiinc.com/SUBM/tip6300/rh6346.htm Worked for me!